Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c4474d306d8404…

MALICIOUS

PDF

57.3 KB Created: 2020-10-15 01:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 221088440eef7c1d96299b43a861a180 SHA-1: b68e489ea2fe79686e1dd631520bf0b6e66942ff SHA-256: e7c4474d306d840427aa11b19cf14c3281014dfd0ebcdca3d6ce10b687148c49
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/123?keyword=current+affairs+book+2020-19+pdf In PDF document text
    • https://site-1043115.mozfiles.com/files/1043115/23184125291.pdfIn PDF document text
    • https://site-1043203.mozfiles.com/files/1043203/nivomo.pdfIn PDF document text
    • https://site-1042348.mozfiles.com/files/1042348/47269919643.pdfIn PDF document text
    • https://site-1039209.mozfiles.com/files/1039209/11719835257.pdfIn PDF document text
    • https://site-1040213.mozfiles.com/files/1040213/bujakatekevuleroxewujiv.pdfIn PDF document text
    • https://site-1042666.mozfiles.com/files/1042666/5408464848.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/ae6209b98.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/3001531.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/8963435.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/efa81cbf-2244-4460-8fa9-60731fadf79f/retira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5919/0689/files/dental_assistant_resume_sample_canada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/love_island_guide_pokemon_revolution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/524c3ed0-ab48-4550-8261-720f4bb161c0/4155842984.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/645f4d5e-5240-4375-8ee6-3222db11cdbe/83048901798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1047bc27-1427-430d-aa4a-43b228d13d9d/43289180461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb860622-49c5-4aea-80aa-c6b0481c8366/xazupalo.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9948 5628 bytes
SHA-256: b25fe24dbb22e88a1546af7ffedb6d971068bef376fe2bd0146157aeb9e002ee
font_01_sfnt_off0000ac72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC72 13692 bytes
SHA-256: afb2e20dfb9327bd906c9eae5200fd1a4d725241e7e0c45224e89291abd2c995

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